Global blocklist allows you to block an entire domain or particular email address to prevent specific leads or entire organizations stop receiving further emails from your organization.
For example, you can block:
abc.com (all the email addresses associated with that domain)
marc@abc.com (particular email address)
You can do it with a DNC (Do Not Contact) list, which lets you exclude specific contacts (email addresses) or domains from receiving any further emails in your email campaigns.
Usually, marketers use the global blocklist for regularly bounced-back email addresses, leads who have requested opt-out from your mailing list, and/or competitors. With Smartlead, you can activate the DNC list even during an ongoing campaign.